Ok, I've finally managed to run the game with 1.20.1 and I've realised something while looking through the extension table:
There is still no way to edit monarch's personalities. They were added with 1.18, are absolutely random (unless you have a historical start ruler with specific personalities) and it would be really nice if you could edit them. Because if the current ruler generating mechanics are annoying, then adding another layer of semi-randomly assigned traits makes it even worse.

Also, the same issue with advisor table as Hawkester - it displays the same string of numbers regardless of skill, advisor or even switching country. Ironically, it works in standard table, but the extended one is messed up.

Mirek_Burczyn: disagree, there is way how to edit ruler personalities, use console cheats, and use for instance add_trait cruel_personality , just_personality atc. All could be found in a Europa Universalis IV\common\ruler_personalities ..

And agree in a CD's extension advisors didnt work but its not a problem since in recifences table advisors works so use recis, instead of CDs, but thank you both...

Mirek_Burczyn: disagree, there is way how to edit ruler personalities, use console cheats, and use for instance add_trait cruel_personality , just_personality atc. All could be found in a Europa Universalis IV\common\ruler_personalities ..

And agree in a CD's extension advisors didnt work but its not a problem since in recifences table advisors works so use recis, instead of CDs, but thank you both...

Ok, digging through event file gave faster solution to Harmonisation. Just type in console event confucian_events.17 It is the only related event that adds 9 points of harmonisation with no drawbacks. Remaining ones are similar to canal events - adding hefty penalties to already slow progress or adding hefty progress, but with even bigger drawbacks. It makes NO DIFFERENCE in the end how the entire thing went, so your choices in events only guides the progress and situation during implementation, but not final results.

Also, you can't just hit 100 harmonisation via events. It needs to be any value below 100 and hit 100% naturally by 1st January of the new year. Otherwise the game bugs out. You won't be able to "finish it", but in the same time you will be unable to start it anew. Same happens if you directly hit the event related with finishing harmonisation - it will bug out, unless you let it grow "naturally" to reach the trigger (100%).
It always grows 3 points/years, always on 1st of January (so technically starting the game on 31st December allows you to gain 3% progress for "free"), NOTHING affects the growth. It's just hard-coded value (or rather soft-coded, as it's in .lua file) that doesn't take into account any factors at all, including missionaries, Confucian harmony, stability and so on.
Kind of lame if you ask me, but hey, it's Paradox and their DLC - it's bound to be a lazy job for not-that-bad overarching idea.

mirku, thx i´ve been looking into a country events,and didnt realized that this will be most likely in a confucian events, and this one is really usefull.... yes the new funtions are really buggy, and i realized that the harmonization happened in the first february, so dont add this event between 1 januarz and 1 februrz and bugs never occur...

Aelhis: yes you can add harmony with console (wrote harmonz and desired number) but its not the same as a harmonization progress...